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[GH-ISSUE #836] [Bug]: Prints sent to H2D refuse to use external spool on left nozzle #563

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opened 2026-05-06 12:30:56 +02:00 by BreizhHardware · 3 comments

BreizhHardware commented

2026-05-06 12:30:56 +02:00

Owner

Originally created by @NoahTingey on GitHub (Mar 27, 2026).
Original GitHub issue: https://github.com/maziggy/bambuddy/issues/836

Originally assigned to: @maziggy on GitHub.

Bug Description

Trying to get my H2D to print from the external spool on the left nozzle. It's sliced for the left nozzle, the filament mapping in Bambuddy is using the left nozzle, and yet every time it starts the print it seems to think it's supposed to use the right nozzle, prompting me to insert filament. See photos:

Expected Behavior

I expected the printer to use the already-loaded filament in the left spool, as it would if I had sent the print to the printer directly (rather than via Bambuddy)

Steps to Reproduce

I slice a file, making sure that the filament mapping is using the left nozzle
I send the print to my virtual printer in Bambuddy
Bambuddy automatically starts the print (though there is the same behavior if I manually start the print)
The printer prompts me to insert filament into the right nozzle

Printer Model

H2D

Bambuddy Version

0.2.3b1

Printer Firmware Version

01.03.00.00

Installation Method

Docker

Operating System

Docker

Relevant Logs / Support Package

bambuddy-support-20260327-103335.zip

Screenshots

No response

Additional Context

No response

Checklist

I have searched existing issues to ensure this bug hasn't already been reported
I am using the latest version of Bambuddy
My printer is set to LAN Only mode
My printer has Developer Mode enabled

Originally created by @NoahTingey on GitHub (Mar 27, 2026). Original GitHub issue: https://github.com/maziggy/bambuddy/issues/836 Originally assigned to: @maziggy on GitHub. ### Bug Description Trying to get my H2D to print from the external spool on the left nozzle. It's sliced for the left nozzle, the filament mapping in Bambuddy is using the left nozzle, and yet every time it starts the print it seems to think it's supposed to use the right nozzle, prompting me to insert filament. See photos: <img width="524" height="554" alt="Image" src="https://github.com/user-attachments/assets/88265927-f7f4-4af0-a91d-a84054426526" /> <img width="849" height="968" alt="Image" src="https://github.com/user-attachments/assets/a383ef42-932a-4ab6-a3bf-0421602aa9ad" /> <img width="1393" height="990" alt="Image" src="https://github.com/user-attachments/assets/d6b9e225-f39b-443d-82f3-273421f14d6e" /> ### Expected Behavior I expected the printer to use the already-loaded filament in the left spool, as it would if I had sent the print to the printer directly (rather than via Bambuddy) ### Steps to Reproduce 1. I slice a file, making sure that the filament mapping is using the left nozzle 2. I send the print to my virtual printer in Bambuddy 3. Bambuddy automatically starts the print (though there is the same behavior if I manually start the print) 4. The printer prompts me to insert filament into the right nozzle ### Printer Model H2D ### Bambuddy Version 0.2.3b1 ### Printer Firmware Version 01.03.00.00 ### Installation Method Docker ### Operating System Docker ### Relevant Logs / Support Package [bambuddy-support-20260327-103335.zip](https://github.com/user-attachments/files/26311224/bambuddy-support-20260327-103335.zip) ### Screenshots _No response_ ### Additional Context _No response_ ### Checklist - [x] I have searched existing issues to ensure this bug hasn't already been reported - [x] I am using the latest version of Bambuddy - [x] My printer is set to LAN Only mode - [x] My printer has Developer Mode enabled

BreizhHardware

2026-05-06 12:30:56 +02:00

closed this issue
added the
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BreizhHardware commented

2026-05-06 12:30:57 +02:00

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Owner

@NoahTingey commented on GitHub (Mar 27, 2026):

Just to add: I just tried printing the same gcode directly via the printer's UI, and it is printing using the correct (left) nozzle.

@NoahTingey commented on GitHub (Mar 27, 2026): Just to add: I just tried printing the same gcode directly via the printer's UI, and it is printing using the correct (left) nozzle.

BreizhHardware commented

2026-05-06 12:30:57 +02:00

Author

Owner

@maziggy commented on GitHub (Mar 28, 2026):

This was already fixed and is available in branch dev, daily build, or next release.

If you find Bambuddy useful, please consider giving it a ⭐ on GitHub — it helps others discover the project!

@maziggy commented on GitHub (Mar 28, 2026): This was already fixed and is available in branch dev, daily build, or next release. ----- If you find Bambuddy useful, please consider giving it a ⭐ on [GitHub](https://github.com/maziggy/bambuddy) — it helps others discover the project!

BreizhHardware commented

2026-05-06 12:30:57 +02:00

Author

Owner

@NoahTingey commented on GitHub (Mar 28, 2026):

Can confirm this works now. Thank you very much!

@NoahTingey commented on GitHub (Mar 28, 2026): Can confirm this works now. Thank you very much!